feat: add template init for new SDK

[dobrac]

🚀 Add template init for new SDK

This PR updates the e2b template init-v2 (or e2b template create) command to leverage the new E2B Templates SDK, providing a more streamlined and developer-friendly experience for creating sandbox templates.

The command will be migrated to just init once the Template SDK becomes the default to create new templates.

🔧 Key Features

Template Structure

my-template/
├── README.md            # Information about the template
├── template.ts          # Template definition using E2B SDK
├── build.dev.ts         # Development build script
└── build.prod.ts        # Production build script

Generated Build Scripts

• npm run e2b:build:dev - Build development template
• npm run e2b:build:prod - Build production template

Template Definition Example

const template = Template()
  .fromImage('ubuntu:22.04')
  .runCmd('echo Hello World E2B!')

[linear]

E2B-2689 CLI template init

[changeset-bot]

🦋 Changeset detected

Latest commit: 0d054f4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@e2b/cli	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[mishushakov]

Mostly minor nits, the biggest change is to change package.json to Makefile for Python and create a new one when one does not exist already. In the CLI please do not throw on validation, exit the process with console.error and a error code instead

[mishushakov]

this should be just language

[mishushakov]

or can't Handlebars handle enums/string?

[dobrac]

it can handle strings, but I think it will be more stable when you for example change the string value in the enum

(it doesn't know enums)